Filler for tire-casings.



Tx A, SPRAGUE.

FILLER FOR TIRE CASNGS.

APPLICMION FILED APR.26,1915,

. W wrm ml Fw THEGDORE A. SPRAGUE, 0F PITTSBURGH. PENNSYLVANA.

FILLER FOR TtE-CASHQS.

mensen.

Specification of Letters Patent.

Patented May l5,

Application filed April 26, 1916. Serial No'. 93,709.

To all whom t may concern Be it`linown that l, Tiinooonn A. SiiiAo'Un, a citizen ot' the United States, residing at littsburgh, in the county of Allegheny and State ot Pennsylvania, have invented certain new and useful lmprovements in a Filler ior Tire-Casings; and l hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.V

rl"his invention is a novel improvement in vehicle tires of the type in which instead of employing a pneumatic tube as a filler for the tire casing a resilient body or core is used. The object oi' the present inven tion is to provide a filler or core for suoli tires which will insure more equal and unitormdistribution of the Weight and pressure upon the outer casing, thereby increasing the durability of the outer casing; and also preventing the tire jarring or jumping as the ivheel rotates because of any' unequal pressures or bearing of the filler upon the tire casing; and a tire provided with my novel filler or core will possess many of the advantages ot' a pneumatic tire together with the advantages oiC durability and nonpuncturaliility of solid cushion tires.

I will explain the invention as illustrated in the accompanying drawings in which:

Figure l is a transverse section through a. complete tire showing the core in section on the line l-l Fig. 2.

Fig. 2 is a side View of part et the core detached.

Fig. 3 is a plan vieiv of lll f.

Fig. el is a detail section en line Ll Fig.

lily novel core or filler is preferably iiiade annular and of such size 'that it will lit around the rim or Vperiphery ot the wheel to which it is 'to be applied; and of a major circumference or cross section suiiicient to till the interior of the outer casing with which the filler or core is employed when suehcasing is applied 'to the vvhecL ln general the core has a longitudinal central rib or bea-ring portion l `which eirtends radially of and perpendicular to the axis of the Wheel, and forms a direct support between the rim or -telly 8 of the wheel to which the tire is applied and the tread portion 7a of the tire casing.

IEhe inner edge of this central bearing portion l of the core is adapted to contact with the riin 8 as shown iii Fie'. l and .is preferably provided with an annular groove l opposed to the ni which groove ei".n hances the resiliency of the core when under load.

"he portion l is also shouldered as at l on its opposite sides and near its inner edge to accommodate and engage the clencher portions Tb` of the tire casing. The said clencher portions Y of the casing, in the example shown, mayl be secured 'to the rim by means of the usual clamp members 8 and 8b, or in other suitable manner. The shoulders l near the inner edge of the portion l, engage the inner ends of the said clenchei' portions 7b as shown in Fig. i so:

that the core has direct firm bearing upon and against the clenclier portions 7b and -will tightly hold and lock saine in position when the tire is applied to the Wheel. riin.

The outer part of the body portion of the core is widened as at 1i so as to increase the bearing contact between the outer surface ot the core and the inner surface of the casing at the point Where the load is greatest upon the core and casing; and this outer portion l is preferably made oiL softer morel elastic material than the main of the core, eltec't ot the filler.

The sides of the bearing portion l maybe concaved as at 1f and on each side of the body portion are spaced projections or paio titions le which extend radially roin the i. art l to the shouldered i in; and said partitions le. together vvi'.1 portion l form at spaced i transverse supporting porti ns of the cor-e or tailler equal iii circumference to and coinu pletely filling 'he ross section the iiiterior of the casing These pari `ions i serve to brace the cas'ug and siuiport both vertically and laterally; and also te 1iallv enhance 'the sustain- 5 5 ai..

ties ot the piiutioii l o the core.

rllne spaces lll-between the projections i@ torni air spaces and Will permit proper eig-- pansion or contraction ot the partitions and portion l ot' the core or iiller. rlhese parti- 'tions i also take care of lateral motions in the casing` and attac-hed to Wheel the core cannot creep on the rim or in the tire casing and thus prevents and avoids riin which enhances the cusliro il,

ous; on@ hemos@ o? ho saoodors sho h@ ood on 'ho @To 'mL/7o.@ mom sighty om the oonoor i of bho casing hold against h@ champ mombol's 8, 8b; and so tho@ neitbor more :nor he cospg con creep or 'otate on ho rim ou.' Wheel when fthe whoo is in mio,

l. A siioni; Elio? for ooohon biro ca@ comissng a body having a, commi coniuuouo mimuoa' supporng Emision oxeoding oiroomfeomzioy 'ho rim ond tread portion oftho til-e casing, said contml porion boing 'provided on op osito sides with ooemly projectin space pmt titons adapted to dlssend on supportfthe sides of the casing; tho outermost portion of tho coro being .of Softw matoriothan the major poriou uheeof; the inner ed o o smid body portion being oiroumforoncioy grooved or channeled and lhe sides of the body portlon odJocont tho 'groove bemg shouldered toengnge and mmm the donoher portions of tho tifo casing.; with a olenoho stantially. as described..

Ln tostlmomy that olaim the foregoing as my own, 11'. iix my Signatura;

THEDRE A, @PRAGUE cosing adopted to surround the Coro,i sub- 

